Fix issue that `z` is not properly set in some cases when clipping the polygon (SoftFever/OrcaSlicer#6933) Apply the patch from https://sourceforge.net/p/polyclipping/bugs/160/
Fix issue that `z` is not properly set in some cases when clipping the polygon (SoftFever/OrcaSlicer#6933) Apply the patch from https://sourceforge.net/p/polyclipping/bugs/160/